Patents by Inventor Fridolin Stauffer

Fridolin Stauffer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process to prepare surface-modified mineral material, resulting products and uses thereof
    Patent number: 9580605
    Abstract: The present invention refers to a process to modify at least part of the surface of at least one mineral material, and to the use, as an additive in an aqueous suspension of mineral materials having a pH between 5 and 10, of at least one agent, wherein the additive allows for the formation of a low volume, high solids content filter or centrifuge cake on dewatering the suspension.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: February 28, 2017
    Assignee: Omya International AG
    Inventors: Guenter Wimmer, Joachim Schölkopf, Hans-Joachim Weitzel, Fridolin Stauffer
  • PROCESS TO PREPARE SURFACE-MODIFIED MINERAL MATERIAL, RESULTING PRODUCTS AND USES THEREOF
    Publication number: 20130137779
    Abstract: The present invention refers to a process to modify at least part of the surface of at least one mineral material, and to the use, as an additive in an aqueous suspension of mineral materials having a pH between 5 and 10, of at least one agent, wherein the additive allows for the formation of a low volume, high solids content filter or centrifuge cake on dewatering the suspension.
    Type: Application
    Filed: April 7, 2011
    Publication date: May 30, 2013
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Guenter Wimmer, Joachim Schölkopf, Fridolin Stauffer